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Carbon, silicon and germanium have four valence electrons each.

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asked Jan 11, 2018 in Physics by sforrest072 (157,439 points) ● 61 ● 410 ● 937

Carbon, silicon and germanium have four valence electrons each. These are characterised by valence and conduction bands separated by energy band gap respectively equal to (Eg)C, (Eg)Si and (Eg)Ge. Which of the following statements is true?

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answered Jan 11, 2018 by mdsamim (213,225 points) ● 5 ● 10 ● 15
selected Jan 11, 2018 by sforrest072
 
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The correct statement is (c).

Of the three given elements, the energy band gap of carbon is the maximum and that of germanium is the least. The energy band gap of these elements are related as: (Eg)C > (Eg)Si > (Eg)Ge

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